Zinc rich epoxy primer and epoxy zinc yellow epoxy primer can be used as anti-corrosion paint coating in various environments, there are some cognitive defects but for the effects of their anti-corrosion coating and coating field, then followed by the manufacturers to explore the differences between the two.
The composition of the two is different.
The former is made up of epoxy resin and polyamide, organic solvent and zinc powder. It is a sub package product. The epoxy zinc yellow primer is made from epoxy resin pigment to color paste as the first ingredient, phenolic resin as the second ingredient, and the product is packaged and matched.
Different fields of painting between the two:
Zinc rich epoxy primer: high solid content, different coating methods, a coating film thickness is different, airless spray (70~80 m), air spray or brush (35~40 m), suitable for coating on carbon steel, steel, cast iron and other equipment, in addition to these can also be used as a primer, as the workshop is used, you must add an excess of diluent, dry film thickness limit below 25 m, if used in the container industry, dry film thickness requirements in 15~20 m, if the ship, the steel structure (for outdoor) dry film thickness usually requires 20~25 M.
Product performance advantages: high content of zinc powder, cathodic protection performance is good, strong adhesion, film appearance is gray. Zinc yellow epoxy primer: suitable for painting on Aluminum Alloy, aluminum plate, stainless steel and galvanized steel surface. The use of galvanized pipe surface is relatively smooth, and because zinc is lively and easy to metal, ordinary paint,alkyd paint binder in saponification reaction of zinc soap, combined with the failure surface and the zinc coating, leading to paint is not strong. So the protective coating should be selected with strong adhesion and passivation, corrosion and shielding by coating layer, selection of corrosion resistance, weathering and good decorative coatings such as aliphatic polyurethane, fluorocarbon surface.
Product performance advantage: good adhesion is its typical advantage, which is obviously different from epoxy zinc rich primer. The epoxy yellow yellow primer has yellow appearance.
Edited by Alisa Jia